Most Relevant Verses
Then the anger of the Lord blazed against Moses; He said, Is there not Aaron your brother, the Levite? I know he can speak well. Also, he is coming out to meet you, and when he sees you, he will be overjoyed.
When the people saw that Moses delayed to come down from the mountain, [they] gathered together to Aaron, and said to him, Up, make us gods to go before us; as for this Moses, the man who brought us up out of the land of Egypt, we do not know what has become of him.
And Nadab and Abihu, the sons of Aaron, each took his censer and put fire in it, and put incense on it, and offered strange and unholy fire before the Lord, as He had not commanded them.